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Unleashing the potential of the Internet of Things 7

7.4 Sensor network management protocol agent

A sensor network management protocol agent is a set of software modules that reside in sensor
network elements. It collects and stores management information such as the number of error
packets received by a sensor network element.

7.5 Application level gateway

An application level gateway is a set of software modules that perform protocol translation between
the SNMP and the sensor network management protocol. A sensor network management protocol
manager, a sensor network management protocol agent and an ALG may be implemented in one
software module, or in separate ones.

7.6 Managed object for sensor network
A managed object for a sensor network is a characteristic of a sensor network that can be managed.
The characteristic of a sensor network is mainly related to the whole sensor network (not just for
each sensor node) such as the number of sensor nodes in a sensor network. This information is
managed by the SNMP agent in a sensor network gateway (see clause 6).

7.7 Managed object for sensor node

A managed object for a sensor node is a characteristic of a sensor node that can be managed. This
information is managed by a sensor network management protocol agent in each sensor node. The
managed object for a sensor node should be defined by other SDOs developing standards for
specific sensor network technology. For example, if the sensor network is a ZigBee sensor network,
the managed objects for the sensor nodes could be a ZigBee network information base (NIB) and a
ZigBee application support information base (AIB), which are described in [b-ZigBee
Specification].

8 Operation of an SNMP-based sensor network management framework

8.1 Overview
Figure 3 illustrates the overall operation flow of an SNMP-based sensor network management
framework.

Rec. ITU-T Y.4701/H.641 (02/2012) 949